Commit 16e395b

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✨ bitwise and of numbers range

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	`1`	`+/**`
	`2`	`+ * @param {number} m`
	`3`	`+ * @param {number} n`
	`4`	`+ * @return {number}`
	`5`	`+ */`
	`6`	`+`
	`7`	`+// HELP:`
	`8`	`+`
	`9`	`+var rangeBitwiseAnd = function (m, n) {`
	`10`	`+ while (m < n) {`
	`11`	`+ // 抹去最右边的 1`
	`12`	`+ n = n & (n - 1);`
	`13`	`+ }`
	`14`	`+`
	`15`	`+ return n;`
	`16`	`+};`

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